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noun Chemistry.
a rare trivalent metallic element, found in gadolinite and other minerals. Symbol: Y; atomic weight: 88.905; atomic number: 39; specific gravity: 4.47.
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Yttrium
is always a great word to know.
So is fluoride. Does it mean:
| a chemical that consumes or renders inactive the impurities in a mixture |
| a salt of hydrofluoric acid consisting of fluorine, as sodium fluoride, NaF, or a compound containing fluorine, as methyl fluoride, CH3F |
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World English Dictionary
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History
yttrium
metallic rare-earth element, 1866, coined in Mod.L. by Swed. chemist Carl Gustaf Mosander (1797-1858) from Ytterby, name of a town in Sweden where it was discovered.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary
yttrium yt·tri·um (ĭt'rē-əm)
n.
Symbol Y
A silvery, ductile, rare-earth element used in various alloys. Atomic number 39; atomic weight 88.905; melting point 1,522°C; boiling point 3,338°C; specific gravity 4.47 (25°C); valence 3.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
yttrium  (ĭt'rē-əm) Pronunciation Key
Symbol Y A silvery metallic element found in the same ores as elements of the lanthanide series. Yttrium is used to strengthen magnesium and aluminum alloys, to provide the red color in color televisions, and as a component of various optical and electronic devices. Atomic number 39; atomic weight 88.906; melting point 1,522°C; boiling point 3,338°C; specific gravity 4.45 (25°C); valence 3. See Periodic Table. |
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Britannica
Encyclopedia
yttrium
(Y), chemical element, rare-earth metal of transition Group IIIb of the periodic table, used for red phosphors in colour television. Yttrium metal is silvery in colour, ductile, and relatively reactive; turnings of the metal ignite readily in air
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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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